Appliance for bending or folding sheet metal.



J. W. LINQUIST. APPLIANCE FOR BENDING 0R FOLDING SHEET METAL.

APPLICATION FILED OCT. I Hi fi- Eatented Nov. 28

- ing my JEEEE W.

LINQUIST, 0F PGB'ILAND, OREGON.

APPLIANCE FOR BEIILDIISIG UR FGLDING SHEET METAL.

Application filed ()ctoher 11, 1915.

To all whom it mac, concern:

Be it known that I, Jnssn TV. LINQUIST, a citizen of the United States,residing at 3531 Fortyninth avenue, S. E, Portland, in the county ofMultnomah and State of Oregon, have invented new and useful Improvementsin Appliances for Bending or Folding Sheet Metal, of which the followingis a specification.

My invention relates to an appliance for bending or folding sheet metaland has as its principal object the provision of a device which shall becomparatively simple in construction but convenient and efficient inoperation.

A further object of my invention resides in the particular arrangementand combination of parts hereinafter described.

In the accompanying drawings :Figure 1 is an elevational View of adevice embodyinvention, parts being broken away for purposes ofillustration. Fig. 2 is an elevational view of the device shown in Fig.1, but illustrating the parts in closed position. Fig. 3 is anelevational view of the device shown in Figs. 1 and 2 taken from theright of Fig. 1.

Throughout the separate views the same parts are designated by the samereference characters.

Referring more particularly to the drawings, 1 is a jaw which is rigidlysecured to the handle or grip member 2 by means of two plates such as 33which are fixed to the jaw 1 and the member 2 by means of bolts orrivets such as 1%, 5 and 6, the

being spaced apart by the members 1 and 2 so as to leave a space betweenthe plates. The lower part of the jaw is suspended between the platesand is there mounted to receive a lug 7, the lug 7 being drilled toreceive the bolt 6 and thus forming a pivotal support for a secondhandle or gripping member 8. The upper end of the member 8 is adapted topass close beneath the lower edge of the jaw' l and serve as a formerfor bending the sheet metal, the former being rounded and indicated at9.

I provide also a bolt 10 at the upper lefthand corner of the plates 8 onwhich bolt is pivoted a second jaw 11, the lower end of which is roundedto form a cam surface as indicated at 12. Moreover, the side or face ofthe member 8 opposite the lug 7 projects toward the jaw 11 forming a camsurface 133, adapted to contact with the surface 12 plates 33Specification of Letters Patent.

Patented Nov. 28, 1915. Serial m. 55,226.

It will be parts that when sons to force the jaw 11 closed. evident fromthe relation of the members 2 and 8 are open the jaw 11 may swing awayfrom the jaw 1, but when the members 2 and 8 are forced together the jaw11 is pressed toward the jaw 1 so as to forcibly clamp materialtherebetween.

At the upper end of the member 8 and just below the forming surface 9are certain additional lugs. On the right-hand side of the member 8 asviewed in Fig. 1 are two lugs 13 projecting at right angles to theright-hand surface of the former 9 and it will be seen that when thejaws are open the said lugs will be in line with the openlng so that apiece of sheet metal such as 14 may be placed between the jaws and reston the lugs. hen the handle members 2 and 8 are now forced togetherbringing the parts into the position shown in Fig. 2, the metal of thesheet 14.- will be forced around the lower edge of the jaw 1, therebybending the same easily but forcibly so that a permanent bend is givento the sheet metal.

On the opposite side of the former 9 from the lugs 13 is still anotherlug 15 which is adapted to strike the inner face of the jaw 11 when themember 8 is moved away from the member 2 so as to forcibly open the jaw11 and hold the same open for the ready insertion of the sheet 14against the lugs 13. The lower edge of the jaw 11 at its clamping facemay be cut away as indicated so that the lug 15 may not interfere withthe jaw when the handles 2 and 8 are forced together.

In the use of my device, it will be understood that a metal sheet may beinserted between the two jaws when the handles 2 and 8 have beenseparated, since when the handles are in this position, the lug 15forces thejaw 11 away from the jaw 1. Consequently, a sheet such as 14can be placed so that its edge will rest upon the lug 13. Now as thehandle 8 is moved toward the handle 2, the lug l5 first releases the jaw11 and as the movement continues the jaw 11 begins to lean forwardtoward the jaw 1 and simultaneously the member 9 begins to turn thesheet 14 around the inner edge of the jaw 1. However, the bending action-is relatively fledged until the jaw 11 goes into position where itclamps the sheet 14 against the jaw 1 and thereupon as the movement ofthe handle 8 continues, the surfaces .133 and 12 continue to force thel1 against the jaw 1 while the member a jaw rigidly secured to saidplate at the ongly foifces the sheet around the inner corner diagonallyopposite the point of conof the jaw '1 into the position shown neetionof said handle, a jaw compleinental 5E to said first mentioned jaw forclamping a s described my invention, 1 metal sheet therebetween, and aformer or bending said sheet, said complemental jaw ng in being pivotedbetween the plates, and a m: A metal bending device comprisi ibination apair of side plates, a handle handle pivoted between the said plateshav- 4e idly secured at one corner 0 said plates, ing means thereon for"forcing the compleaw rigidly secured to said plate at the mental jawagainst said fixed jaw, said hanner diagonally opposite the point ofcondle having also means for throwing sai :tion of said handle, a jawcomplemental complemental jaw into the open position. said firstmentioned jaw for clamping i. A meta bending device comprising in metalsheet therebetween, and a former combination a pair of side plates, ahandle bending said Sheet around the inner edge rigidly secured at onecorner 0 1g. .aving thu a jaw rigldl secured to said plate aft th)JOfilte t e Joint 0 eon- 011811 0 ,1 I

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